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cal•o•rie

Pronunciation: (kal'u-rē),
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[key]—n.1. Thermodynam.a. Also called gram calorie, small calorie. an amount of heat exactly equal to 4.1840 joules. Abbr.: cal
b. (usually cap.) kilocalorie. Abbr.: Cal
2. Physiol.a. a unit equal to the kilocalorie, used to express the heat output of an organism and the fuel or energy value of food.
b. a quantity of food capable of producing such an amount of energy. Also,calory.